The aim of the study is to assess the agreement/correlations among different measures so the comment is correct that different units of measure are being assessed. The informant-completed questionnaire (modified clinical global impression of severity for informants (mCGI-S-INF) and the clinical-rater completed questionnaire, Positive and Negative Syndrome Scale - Excited Component (PEC) are the primary outcomes being assessed. The mCGI-S-INF is a single item with a 0 to 3 point scale with higher values indicating more severe agitation. The PEC is a five item questionnaire with 7-point response options, overall scores range from 5 to 35 with higher scores indicating more severe agitation.

Assess content validity of the Modified Clinical Global Impression of Severity for Informants (mCGI-S-INF) and informant training materials. The scale being utilized is mCGI-S-INF. There is no score as it is a qualitative assessment and it is being validated to measure patient informant reported outcomes against patient reported outcomes (mCGI-S-PAT) and physician reported outcomes using the Positive and Negative Syndrome Scale - Excited Component (PEC) scale where the highest score indicates the maximum agitation that could be experienced.